Alternatives to Castelion

Developing interceptor systems for drone and cruise missile defense.

Israeli suicide drone maker

Precision guidance systems for UAVs.

Ukrainian defense technology company specializing in AI-guided autonomous strike systems.

Defense startup mass-producing affordable hypersonic missile systems for the U.S. military, founded by ex-SpaceX engineers.

Strengthening European defence sovereignty by accelerating the procurement of European unmanned systems.

Designs and manufactures flight-proven aerospace and defense systems, including rocket engines and hypersonic capabilities.

AI-powered software for autonomous drone swarm operations.

Enabling scalable, low-cost space-to-Earth laser communications.

A SPAC merging with Space-Eyes to take the defense tech startup public.

Synthetic data platform for defense and dual-use markets.

Develops next-generation, high-thrust electric plasma propulsion systems for the space industry.

Building next-generation defense systems with advanced robotics and AI.

Develops advanced defense technologies including unmanned systems, space, hypersonics, and engines for national security.

Defence and industrial technology company developing integrated platforms.

Air defense startup focused on mass-producing low-cost interceptors for drones and missiles.

Data observability for defense contractors and government vendors.

A premier player in precision technologies, specializing in critical safety components for solid rocket motors.

ReOrbit manufactures software-defined satellites for sovereign communications and national security.

Defense technology company developing autonomous systems and AI-enabled software for national security.

Global aerospace and defense technology company developing advanced systems for aeronautics, space, defense, and cyberspace.

Developing fully reusable rockets for low-cost, on-demand access to and from space.

Develops AI-powered, multi-domain unmanned aerial systems for defense and commercial applications.

Formlabs designs and manufactures professional 3D printers and materials, making digital fabrication accessible for engineers, designers, and manufacturers.

Aviation technology company developing SkyOS, a universal operating system for simplified aircraft control.

AI-powered cybersecurity platform for national defense and critical infrastructure.

Global aerospace and defense company developing advanced systems for national security and commercial markets.

Building the world's first mass-produced portable nuclear generators for anywhere power delivery.

Software-first manufacturing company building a distributed network of AI-powered precision factories for critical industries.

European leader in space launchers and defense systems, developing and operating reliable civil and military launch vehicles.

Solar-electric, high-altitude pseudo-satellite for persistent stratospheric operations.

Provides governments with digital tools for law enforcement, defense, and security.

Anello Photonics delivers resilient, high-precision navigation solutions for GPS-denied environments using proprietary SiPhOG™ technology.

Develops autonomous hybrid-electric VTOL cargo aircraft for middle-mile logistics and defense.

Designs, builds, and operates unmanned aerial systems (UAS) for logistics, civil protection, and defense.

American aerospace company developing launch vehicles and spacecraft for commercial and government customers.

Kalam Labs develops advanced drone technology for various applications.

A global leader in space and defense technology solutions.

An Estonian DefenseTech startup developing affordable, mass-producible, AI-powered air defense missile systems.

Develops non-flammable, high-performance, low-cost sodium-ion batteries for energy storage.

Electrochemical Additive Manufacturing (ECAM) for high-resolution, scalable metal 3D printing.

Designs and manufactures advanced unmanned aerial systems (UAS) for defense and public safety.

AI-powered weather forecasting for governments, militaries, and corporations.

Designs, develops, and manufactures gallium nitride on silicon carbide (GaN-on-SiC) epitaxial wafers using proprietary growth technologies.

HawkEye 360 provides a global radio frequency (RF) geospatial intelligence and analytics service.

AI-native platform for autonomous, coordinated multiship drone operations.

Custom 3D metal printing system for manufacturing complex metal parts.

Hoverfly provides drone services for film and photography.

Arondite is a London-based defense technology company that develops foundational software and artificial intelligence to connect and coordinate disparate autonomous systems for defense and national security organizations.

Developing autonomous firefighting drones for early wildfire suppression using AI-powered aerial systems.

MDA is a leading provider of advanced satellite and space technology solutions for Earth observation, robotics, and communication.

Quantum technology company developing advanced sensors, navigation, and AI solutions.

A secure, AI-native project management platform for classified defense and government multi-entity collaboration.

JOUAV is a Chinese company that develops and manufactures unmanned aerial systems for various industries.

Developing and deploying advanced autonomous drones for critical missions.

Portuguese drone manufacturer and partner in Intelic's European defence procurement hub.

Developing advanced, high-performance rocket engines for the next generation of space exploration.